
Star profile
HIP 77645
Variable starWhat is HIP 77645
About 2,160 light years away, in the small but southern Norma, a variable blue B-type star burns with unstable vigour. Its light set out around the year 134 AD, in the heart of the Pax Romana, when the Empire under Hadrian was raising walls from Britain to the Danube frontier. Far hotter and more massive than the Sun, it pulses with subtle changes that betray its young and energetic nature. The celestial carpenter's Square, another of the modern constellations sketched by Lacaille, offers it a quiet corner of the southern Milky Way.
Where it is and when to see it
HIP 77645 lies in the southern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is May: the Sun sits at the opposite point of the sky and the star culminates around midnight. How high it climbs above the horizon depends on the latitude you watch from.
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Stelvia's sky works like a signature wall: anyone can leave their name and a message on a real star, and that signature goes up on the map for everyone to read. Signing is free.
A signature without a lock can be replaced by someone else's. The lock makes the signature permanent and lets you choose a symbolic name for the star, always shown next to the star's catalogue identifier. How the lock works
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A public signature from a real person. The chosen name is a symbolic denomination within Stelvia, with no official standing or IAU recognition: the sky is not for sale and belongs to no one.
Astronomical data for HIP 77645
- Constellation
- Norma
- Apparent magnitude
- 5.74
- Distance
- 2160.3 light years
- Coordinates (J2000)
- RA 237.778° · Dec -55.056°
- Catalogue
- HIP 77645 · HD 141318
A symbolic commemorative gift: neither the signature nor the chosen name implies ownership of the star or recognition by the IAU.
Other stars in Norma
Norma has 26 stars in Stelvia's catalogue. Here are a few of them.
- Gamma 2 Norma4.01
- Epsilon Norma4.46
- Iota 1 Norma4.63
- Iota 2 Norma5.57
- HIP 796895.61
- HIP 806755.67
- HIP 800545.76
- HIP 775625.78